Dependency Injection a la angular with "$" variables denoting wired values

DependencyInjection.js

function regex(func) {return new RegExp(func.name+"\\(([$?\\w+, ?]*)\\)");}
function meta(func) {
    var matches = regex(func).exec(func.toString().replace(" ", ""));
    var args = matches[1].split(",");

    return {name: func.name, args: args.map(function(arg){ return arg.replace(" ", ""); })};
}

function wrapper(func, factory) {
    var args = meta(func).args;
    var injectedArgs = args.map(function(arg) {
        var injection = factory[arg.replace("$", "")];
        return injection || arg;
    });
    return function () {
        var i = 0;
        var outsideArgs = arguments;
        var functionArguments = args.map(function(arg) {
            var injection = factory[arg.replace("$", "")];
            console.log("replacing %s with ", arg, injection); 
            return injection || outsideArgs[i++];
        }); 
        console.log(functionArguments);
        console.log("new function takes %d arguments", i);
        func.apply(func, functionArguments);
    }
}

function a($inj, name, $value) {
    console.log($inj,name,$value);
}

var aPrimed = wrapper(a,{"inj":"INJECTED", "value":"VALUE"});
aPrimed("name");
console.log(aPrimed.toString());